Peter Megaw, exhibits chair for the Tucson Gem and Mineral Show, organizes and labels some of his specimens for display at this year's show while working at his north side home on Thursday, Jan. 23, 2014, in Tucson, Ariz. Megaw has spent nearly 40 years amassing his personal collection, comprised of years of field work in visiting international mines and museums. Photo by Mike Christy / Arizona Daily Star